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生物学种
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  biological species
     This result was congruence with three basic biological species in cultivated Citrus obtained by Scora and Barrett.
     这一实验结果与近来有关栽培柑桔只有枸橼、柚和宽皮柑桔具有生物学种的价值的看法相类似。
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     It was concluded from observation results that 1) the three species are strictly independent, they are valid biological species sharing two basic St and Y genomes;
     kamoji为 7.58 +13.58 +0 .0 4 +0 .0 4 ,杂种高度不育。 结果表明 :1)这 3个种是独立的生物学种 ,拥有两组相似的基本染色体组 St Y。
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     (3) It has been well known that there are many problems with the application of the biological species concept in plants, and thus at the present time the majority of plant systematists actuallyseldom use this concept in their practical work.
     由于应用生物学种概念于植物界产生了许多问题,因此多为植物系统学家所抛弃。
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     The data of cytological studies on karyotype analysis can be used for taxonomic evidence. Combining with materials in morphology,anatomy,embryology and genetics,they can solve many knotty problems,and are also absolutely necessary for establishing biological species and new natural system.
     细胞学的核型分析资料作为分类学的证据,结合形态学、解剖学、胚胎学和遗传学等方面的证据,在解决分类上的疑难问题,起过不少的作用,而且是建立生物学种和建立新的自然分类系统所必不可少的资料。
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  相似匹配句对
     STUDY ON POLLINATION BIOLOGY IN 10 SPECIES OF LILIUM
     10百合属植物的传粉生物学
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     AN ATTEMPT TO EXTRACT AN BIOLOGICAL STAIN
     试制一重要生物学染料
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     F.
     新F.
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     1 The variation of perforation plate of vessels in the stemthere are two types of vessels in the secondary stem of E.
     1
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     Study on systematical biology
     系统生物学
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  biological species
Genetic differentiation of a new biological species of the predatory yeast Arthroascus
      
After reevaluation of the taxonomic position of 27 yeast collection strains of different origin by UP-PCR followed by dot-hybridization, only 22 strains were assigned to the biological species Zygowilliopsis californica(Lodder) Kudriavzev.
      
Relatively deep genetic divergence and coexistence of the two main clades at one of the localities suggest that the material may include two biological species.
      
graeca complex are conspecific under the Biological Species Concept.
      
Electropolymerization as a versatile route for immobilizing biological species onto surfaces
      
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There has been in general two schools of thought with regard to the nature of species among naturalists and evolutionists. Some observers hold that species are objectively real units in nature; others contend that they are artificial categories created by man for purposes of classification. The key to the question seems to be : Is there any consistent criterion for the dcsigpa-tion of species ?

关于物种的概念和本质的争论由来已久。大多数学者认为种是自然界客观存在的真实单位,是形态上和生殖上间断的群体体系,与种内连续的群体体系——宗,有着本质的区别。少数学者则认为种是主观意识的产物,是为了分类的目的而任意确定的人为的分类阶元,与宗只有程度的不同而无本质的区别;只有个体才是客观真实的单位。以形态标准为主的分类学种概念和以生殖隔离为标准的生物学种概念只能说代表了自然界有机体类群不连续性的两个不尽相符,但部分一致的侧面,而不能说就是客观物种的反映。自然界的生命有机体有两重性。它们既不是一群乱七八糟的乌合之众,也不是秩然不紊的鳞次栉比,而是以群体的组织形式适应于各自分布区内的生态位,在表型和基因型的变异式样上具有一定规律的遗传多样性。物种的客观本质也有两重性。物种作为有机体组合的单位既存在又不存在。说物种客观存在是因为按形态或生殖的不连续性标准划分的“种”在自然界具有一定的普遍性;说物种并非客观存在是因为至今还没有一个能把所有的生命有机体都划分成统一的生物学单位的不连续性标准。

About 37 "species" and "subspecies" assigned to 25 "genera" have previously been described from North China. Are these valid taxa? The answer depends crucially upon the concepts and criteria of species and genera, particularly upon those of species as the basic unit of taxonomy. Although the biological criterion of reproductive isolation is unavailable for the classification of fossil species, the criteria of population, morphology, ecology and biogeography which are also summarized on the basis of taxonomic...

About 37 "species" and "subspecies" assigned to 25 "genera" have previously been described from North China. Are these valid taxa? The answer depends crucially upon the concepts and criteria of species and genera, particularly upon those of species as the basic unit of taxonomy. Although the biological criterion of reproductive isolation is unavailable for the classification of fossil species, the criteria of population, morphology, ecology and biogeography which are also summarized on the basis of taxonomic practice on recent organisms, are appropriate for classifying fossil species. Still, these criteria of species with the exception of population can also be used as the foundation for the classification of fossil genera consisting of species. In other words, the criteria of population (as to species) or species-group (as to genera), morphology, ecology and biogeography should be regarded as the basic taxonomical criteria of fossil species and genera. Based on the criteria, the ostracods mentioned above can be merged into about 22 species (including subspecies)and 11 genera, among which the majority are composed of several "species" or "genera", and the minority are separately embraced in the other large "species" or "genera" (see Table 1). In addition, a new species is described herewith.Systematic DescriptionOrder Bradoriida Raymond, 1935Suborder Bradoriina Raymond, 1935Genus Wushiella Xiao et Zhao, 1986Weshiella shangjiensis sp. nov. (P1. Ⅰ, fig. 3) 1987 Houlongdongella xichuanensis Zhang, p. 13, fig. 10-G—I.Diagnosis Carapace with a groove-shaped trough in anterodorsal region; ventral end of trough with a small circular node; a slightly curved and welldeveloped ridge as the posterior border of the trough, connecting with the small circular node at the ventral end of the trough.Comparison The new species is not compatible with Houlongdongella xichuanensis Zhang in characters although both have depressions in common. But in the for- mer, the depression is groove-shaped, whereas in the latter it is V-shaped; the posterior border of trough is markedly ridge-shaped in the former, but without any visible ridge in the latter. In addition, there is a small circular node at the ventral end of trough in the former, but it can not be seen in the latter. Therefore, both species should not be regarded as a single species. Furthermore, the new species is not consonant in characters with the genus Houlongdongella, but is consonant with Wushiella. As a result, the new species is regarded as tenable.Locality and age Xichuan, Henan; Shangji Formation, Lower Cambrian.

我国北部现已命名的寒武纪介形虫有37个“种”(包括:“亚种”)和25个“属”。参考现代生物学的种、属概念及有关种、属建立的一般标准,文中对这些寒武纪介形虫“种”、“属”进行了认真分析和详细类比,认为它们可归并为22个种,11个属,其中原已命名的许多“种”、“属”是这些种、属的同物异名,少数“种”、“属”则是这些种、属的异物同名。此外,本文建立了1新种Wushiella shangjiensis sp. nov.。

The flat leaf beetle Gastrolina depressa Baly is a serious pest of pterocarya stenopteraC.De.in Nifong moutain region.It occures two,and a partly three generations per year,and from April to June,the damage is more serious.This paper discribes the life history,theincreased tendency of population density,and the natural enemies of it.The authors use thelife table,the age schedule of female birth innate capacity for increase,and also the stableage composition of the laboratory populations to illustrate the increased...

The flat leaf beetle Gastrolina depressa Baly is a serious pest of pterocarya stenopteraC.De.in Nifong moutain region.It occures two,and a partly three generations per year,and from April to June,the damage is more serious.This paper discribes the life history,theincreased tendency of population density,and the natural enemies of it.The authors use thelife table,the age schedule of female birth innate capacity for increase,and also the stableage composition of the laboratory populations to illustrate the increased tendency.

宜丰山区枫杨扁叶甲为害枫杨甚烈,此虫一年2代,部分3代,4月上旬~6月是为害盛期.文中对其生物学、种群增长趋势和天敌均作了记述和分析。在种群增长趋势中,应用了自然种群生命表、种群繁殖生命表及实验种群稳定龄期组配表等方式,加以表达。

 
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